Which expression is equivalent to the following complex fraction?

2-1/y divided by 3+1/y

Answer: 2-1 / y times y / 3+1

Step-by-step explanation:

In dividing fractions, it is possible to change the sign to multiplication sign by swapping positions of the numerator and denominator.

For example given,

a/b divided by c/d,

We can write this as

a/b times d/c